Pixel device and display panel

Abstract

The embodiment of the invention discloses a pixel device and a display panel, the pixel device comprises a first sub-pixel, and the first sub-pixel is provided with a light emitting area and at least two overlapping areas; the dimming structure layer is arranged on the first sub-pixel, and the dimming structure layer is multiplexed as a bonding layer; the second sub-pixel is arranged on one surface, far away from the first sub-pixel, of the dimming structure layer and is correspondingly positioned in a stacking area of the first sub-pixel; the third sub-pixel is arranged on one surface, far away from the first sub-pixel, of the dimming structure layer, and is correspondingly positioned in the other overlapping area of the first sub-pixel; the dimming structure layer is used for guiding the light emitted by the overlapping area of the first sub-pixel to the light emitting area of the first sub-pixel and emitting the light out of the light emitting area of the first sub-pixel. According to the pixel device and the display panel provided by the embodiment of the invention, the dimming structure layer is compounded into the bonding layer, and the dimming structure layer is used for guiding the light emitted by the stacking area of the first sub-pixel to the light emitting area of the first sub-pixel and emitting the light out of the light emitting area of the first sub-pixel.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a pixel device and a display panel. Background Art

[0002] Among the related technologies of three-color LED devices, u-LED devices have been widely studied recently as the optimal solution in the AR display field due to their small size and high brightness.

[0003] Among them, when u-LED devices are applied to full-color technology, RGB sub-pixels are placed horizontally. This structure is relatively simple, but its disadvantage is that the resolution (PPI) is low. In order to obtain a higher PPI, the size of the sub-pixel needs to be reduced. When the size of the sub-pixel is reduced, the size effect of the RGB sub-pixel device is extremely serious, resulting in unsatisfactory light output efficiency, especially for the red (R) sub-pixel. Summary of the invention

[0004] The embodiments of the present application provide a pixel device and a display panel, which can improve the light extraction efficiency of a first sub-pixel.

[0005] An embodiment of the present application provides a pixel device, which includes:

[0006] A first sub-pixel, the first sub-pixel comprising a first electrode, a first light-emitting layer, and a second electrode, the first light-emitting layer being arranged on the first electrode, the second electrode being arranged on a surface of the first light-emitting layer away from the first electrode, the first sub-pixel having a light-emitting region and at least two overlapping regions, the light-emitting region and the overlapping regions being arranged at intervals;

[0007] A dimming structure layer, the dimming structure layer is arranged on a surface of the second electrode away from the first electrode, and the dimming structure layer is multiplexed as a bonding layer;

[0008] A second sub-pixel, the second sub-pixel is disposed on a surface of the dimming structure layer away from the first sub-pixel and is located correspondingly in an overlapping area of ​​the first sub-pixel;

[0009] A third sub-pixel, the third sub-pixel being disposed on a surface of the dimming structure layer away from the first sub-pixel and corresponding to another overlapping area of ​​the first sub-pixel;

[0010] The colors of light emitted by the first sub-pixel, the second sub-pixel and the third sub-pixel are different from each other, and the dimming structure layer is used to guide the light emitted by the overlapping area of ​​the first sub-pixel to the light emitting area of ​​the first sub-pixel and emit it.

[0011] In some embodiments of the present application, the dimming structure layer includes a supporting portion, a first dimming portion, a second dimming portion and a covering layer, the supporting portion is correspondingly arranged in the light emitting area of ​​the first sub-pixel, the first dimming portion is arranged on one side of the supporting portion and extends to one of the stacking areas of the first sub-pixel, the second dimming portion is arranged on the other side of the supporting portion and extends to another of the stacking areas of the first sub-pixel, the covering layer covers the supporting portion, the first dimming portion and the second dimming portion, the refractive index of the supporting portion is smaller than the refractive indexes of the first dimming portion and the second dimming portion, and the refractive index of the covering layer is smaller than the refractive indexes of the first dimming portion and the second dimming portion;

[0012] The support portion has a first side surface and a second side surface, the first side surface and the second side surface both extend toward the center line of the support portion, the first side surface has a first slope angle, the second side surface has a second slope angle, and the first slope angle and the second slope angle are both acute angles;

[0013] The first dimming portion has a first side wall and a second side wall which are oppositely arranged, and the second dimming portion has a third side wall and a fourth side wall which are oppositely arranged, the first side wall is attached to the first side surface to form a first total reflection interface, and the third side wall covers the second side surface to form a second total reflection interface;

[0014] The second side wall has a third slope angle, the fourth side wall has a fourth slope angle, the third slope angle and the fourth slope angle are both acute angles, the covering layer covers the second side wall to form a third total reflection interface, and the covering layer covers the fourth side wall to form a fourth total reflection interface.

[0015] In some embodiments of the present application, the refractive indexes of the support portion and the cover layer are both less than 1.7, and the refractive indexes of the first dimming portion and the second dimming portion are both greater than 1.7.

[0016] In some embodiments of the present application, the first slope angle, the second slope angle, the third slope angle and the fourth slope angle are all equal to 45 degrees.

[0017] In some embodiments of the present application, in the orthographic projection pattern of the pixel device, the supporting portion is located between the second sub-pixel and the third sub-pixel, and is spaced apart from the second sub-pixel and the third sub-pixel.

[0018] In some embodiments of the present application, the second sub-pixel includes a second light-emitting layer arranged on a side of the covering layer away from the first sub-pixel, and in the orthographic projection direction of the pixel device, the third total reflection interface is arranged to overlap with the second light-emitting layer.

[0019] In some embodiments of the present application, the second sub-pixel includes a third electrode and a fourth electrode, the third electrode is arranged between the covering layer and the second light-emitting layer, the fourth electrode is arranged on a side of the second light-emitting layer away from the first sub-pixel, and the third electrode includes a conductive reflective layer.

[0020] In some embodiments of the present application, the third sub-pixel includes the second light-emitting layer, the bonding layer and the third light-emitting layer, which are sequentially arranged on the side of the covering layer away from the first sub-pixel, and in the orthographic projection direction of the pixel device, the fourth total reflection interface is arranged to overlap with the third light-emitting layer.

[0021] In some embodiments of the present application, the third sub-pixel also includes a fifth electrode and a sixth electrode, the fifth electrode is arranged between the bonding layer and the third light-emitting layer, the sixth electrode is arranged on a side of the third light-emitting layer away from the first sub-pixel, and the fifth electrode includes a conductive reflective layer.

[0022] Correspondingly, an embodiment of the present application further provides a display panel, which includes a driving substrate and a pixel device as described in any one of the above embodiments, wherein the pixel device is arranged on the driving substrate.

[0023] The pixel device and display panel of the embodiment of the present application use a dimming structure layer composited as a bonding layer, and the dimming structure layer is used to guide the light emitted from the overlapping area of ​​the first sub-pixel to the light emitting area of ​​the first sub-pixel and emit it. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of a pixel device provided in an embodiment of the present application;

[0025] Figure 2 is a flow chart for preparing a dimming structure layer of a pixel device provided in an embodiment of the present application;

[0026] Figure 3 is a light emitting schematic diagram of a pixel device provided in an embodiment of the present application;

[0027] Figure 4 is another structural schematic diagram of a pixel device provided in an embodiment of the present application;

[0028] Figure 5 It is a schematic diagram of the structure of the display panel provided in the embodiment of the present application. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the drawings; while "inside" and "outside" refer to the outline of the device; the terms "first", "second", "third", etc. are used only as markings, and no numerical requirements are imposed or order is established.

[0030] The embodiments of the present application provide a pixel device and a display panel, which are described in detail below. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments.

[0031] Please refer to Figure 1 The embodiment of the present application provides a pixel device 100, which includes a first sub-pixel p1, a dimming structure layer tg, a second sub-pixel p2 and a third sub-pixel p3.

[0032] The first sub-pixel p1 includes a first electrode 111, a first light-emitting layer 112, and a second electrode 113. The first light-emitting layer 112 is disposed on the first electrode 111. The second electrode 113 is disposed on a side of the first light-emitting layer 112 away from the first electrode 111. The first sub-pixel p1 has a light-emitting region cg and at least two overlapping regions ds, and the light-emitting region cg and the overlapping region ds are disposed at intervals.

[0033] The dimming structure layer tg is arranged to cover the entire first sub-pixel p1. The dimming structure layer tg is arranged on a side of the second electrode 113 away from the first electrode 111. The dimming structure layer tg is multiplexed as a bonding layer.

[0034] The second sub-pixel p2 is disposed on a surface of the light-adjusting structure layer tg away from the first sub-pixel p1 , and corresponds to a stacking area ds of the first sub-pixel p1 .

[0035] The third sub-pixel p3 is disposed on a surface of the dimming structure layer tg away from the first sub-pixel p1 , and is located correspondingly to the other overlapping area ds of the first sub-pixel p1 .

[0036] The first sub-pixel p1, the second sub-pixel p2 and the third sub-pixel p3 emit different colors of light. The dimming structure layer tg is used to guide the light emitted from the overlapping area ds of the first sub-pixel p1 to the light emitting area cg of the first sub-pixel p1 and emit it.

[0037] The pixel device 100 of the embodiment of the present application uses a dimming structure layer tg as a bonding layer, and the dimming structure layer tg is used to guide the light emitted from the overlapping area ds of the first sub-pixel p1 to the light emitting area cg of the first sub-pixel p1 and emit it, so as to improve the light emitting efficiency of the first sub-pixel p1. In other words, the pixel device 100 of the embodiment of the present application can improve the light emitting efficiency of the first sub-pixel p1 without increasing the thickness.

[0038] Optionally, the first sub-pixel p1 may be one of a red sub-pixel, a green sub-pixel, and a blue sub-pixel, the second sub-pixel p2 may be another of the red sub-pixel, the green sub-pixel, and the blue sub-pixel, and the third sub-pixel p3 may be the last of the red sub-pixel, the green sub-pixel, and the blue sub-pixel. For example, the first sub-pixel p1 may be a red sub-pixel, the second sub-pixel p2 may be a green sub-pixel, and the third sub-pixel p3 may be a blue sub-pixel; the first sub-pixel p1 may be a blue sub-pixel, the second sub-pixel p2 may be a green sub-pixel, and the third sub-pixel p3 may be a red sub-pixel; or the first sub-pixel p1 may be a green sub-pixel, the second sub-pixel p2 may be a blue sub-pixel, and the third sub-pixel p3 may be a red sub-pixel, and so on.

[0039] In this embodiment, the first sub-pixel p1 is a red sub-pixel, the second sub-pixel p2 is a green sub-pixel, and the third sub-pixel p3 is a blue sub-pixel. However, the present invention is not limited thereto.

[0040] The first light emitting layer 112 is configured to emit red light. The second light emitting layer 121 of the second sub-pixel p2 is configured to emit green light. The third light emitting layer 132 of the third sub-pixel p3 is configured to emit blue light.

[0041] The first electrode 111 is a reflective electrode, and the second electrode 113 is a transparent electrode.

[0042] Optionally, in the orthographic projection pattern of the pixel device 100, the light emitting area cg of the first sub-pixel p1 is located between the second sub-pixel p2 and the third sub-pixel p3, wherein the uniformity of light emitting of the first sub-pixel p1 can be improved due to the dimming structure layer tg.

[0043] Optionally, the light emitting area cg of the first sub-pixel p1 is located where the second sub-pixel p2 and the third sub-pixel p3 are arranged side by side.

[0044] In some embodiments, in the orthographic projection pattern of the pixel device 100, the light emitting area cg of the first sub-pixel p1 may also be located on the same side of the second sub-pixel p2 and the third sub-pixel p3, that is, the centers of the light emitting area cg of the first sub-pixel p1, the second sub-pixel p2 and the third sub-pixel p3 are arranged in a triangle.

[0045] Optionally, the pixel device 100 may further include a conductive pad dd and an insulating layer jy. The insulating layer jy covers the conductive pad dd, and the first electrode 111 is disposed on the insulating layer jy. The first electrode 111 is connected to the conductive pad dd through a via. The conductive pad dd is used for binding and connecting with the driving substrate. The first electrode 111 and the conductive pad dd are overlapped.

[0046] Optional, see Figure 1 and Figure 2 The dimming structure layer tg includes a supporting portion t1, a first dimming portion t2, a second dimming portion t3 and a covering layer t4. The supporting portion t1 is arranged correspondingly in the light emitting area cg of the first sub-pixel p1.

[0047] The first dimming part t2 is disposed on one side of the supporting part t1 and extends to an overlapping area ds of the first sub-pixel p1. The second dimming part t3 is disposed on the other side of the supporting part t1 and extends to another overlapping area ds of the first sub-pixel p1. The covering layer t4 covers the supporting part t1, the first dimming part t2 and the second dimming part t3.

[0048] The refractive index of the support portion t1 is smaller than the refractive index of the first light modulating portion t2 and the second light modulating portion t3. The refractive index of the cover layer t4 is smaller than the refractive index of the first light modulating portion t2 and the second light modulating portion t3.

[0049] The support portion t1 has a first side surface t11 and a second side surface t12, both of which extend toward the center line mn of the support portion t1. The first side surface t11 has a first slope angle a1, and the second side surface t12 has a second slope angle a2, both of which are acute angles.

[0050] The first dimming part t2 has a first side wall t21 and a second side wall t22 which are arranged opposite to each other. The second dimming part t3 has a third side wall t31 and a fourth side wall t32 which are arranged opposite to each other. The first side wall t21 and the first side surface t11 are attached to form a first total reflection interface fs1. The third side wall t31 and the second side surface t12 are attached to form a second total reflection interface fs2.

[0051] The second side wall t22 has a third slope angle a3. The fourth side wall t32 has a fourth slope angle a4. The third slope angle a3 and the fourth slope angle a4 are both acute angles. The cover layer t4 covers the second side wall t22 to form a third total reflection interface fs3. The cover layer t4 covers the fourth side wall t32 to form a fourth total reflection interface fs4.

[0052] Please refer to Figure 3When the light emitted from the overlapping area ds of the first sub-pixel p1 hits the third total reflection interface fs3 and the fourth total reflection interface fs4, reflection occurs, and the light radiates from the third total reflection interface fs3 to the first total reflection interface fs1, and from the fourth total reflection interface fs4 to the second total reflection interface fs2, and finally is reflected and emitted from the first total reflection interface fs1 and the second total reflection interface fs2.

[0053] The pixel device 100 of this embodiment uses the first total reflection interface fs1, the third total reflection interface fs3, the second reflection interface fs2 and the fourth total reflection interface fs4 to guide the light in the overlapping area ds to the light output area cg, thereby increasing the light output of the light output area cg and further improving the light output efficiency of the first sub-pixel p1.

[0054] Optionally, the refractive indexes of the support portion t1 and the cover layer t4 are both less than 1.7. The refractive indexes of the first dimming portion t2 and the second dimming portion t3 are both greater than 1.7.

[0055] Optionally, the materials of the support portion t1 and the cover layer t4 can each be MgF 2 、SiO 2 or BaF 2 The materials of the first dimming part t2 and the second dimming part t3 can be TiO 2 、ZrO 2 、Al 2 O 3 , ZnS or ZnSe and other materials with high refractive index.

[0056] Optionally, the first dimming part t2 and the second dimming part t3 are made of the same material, and the supporting part t1 and the covering layer t4 are made of the same material, so that the light output of the first sub-pixel p1 is more uniform.

[0057] It can be understood that the larger the third slope angle a3 and the fourth slope angle a4, the less light radiated to the third total reflection interface fs3 and the fourth total reflection interface fs4; the smaller the third slope angle a3 and the fourth slope angle a4, the more light radiated to the third total reflection interface fs3 and the fourth total reflection interface fs4.

[0058] In addition, the magnitudes of the first slope angle a1 and the second slope angle a2 also adjust the emission angle of the light. The larger the first slope angle a1 and the second slope angle a2 are, the more the light is emitted in the directions of both sides.

[0059] Optionally, the first slope angle a1, the second slope angle a2, the third slope angle a3 and the fourth slope angle a4 are all equal to 45 degrees. This arrangement allows the light emitted from the overlapping area ds to be reflected by the first total reflection interface fs1, the third total reflection interface fs3, the second total reflection interface fs2 and the fourth total reflection interface fs4 and then emitted from the positive viewing angle direction (0 degree viewing angle direction) of the light emitting area cg, thereby improving the light emitting brightness of the first sub-pixel p1 at a positive viewing angle.

[0060] It is understandable that the first slope angle a1, the second slope angle a2, the third slope angle a3 and the fourth slope angle a4 can be flexibly adjusted according to actual optical requirements. That is, the first slope angle a1, the second slope angle a2, the third slope angle a3 and the fourth slope angle a4 can be the same as or different from each other.

[0061] Optionally, in the cross section of the pixel device 100 in the orthographic projection direction, the shape of the support portion t1 is a trapezoid. The support portion t1 also has an upper bottom surface t13 and a lower bottom surface t14, the upper bottom surface t13 connects one end of the first side surface t11 and the second side surface t12, and the lower bottom surface t14 connects the other end of the first side surface t11 and the second side surface t12.

[0062] Optionally, in the orthographic projection pattern of the pixel device 100, the support portion t1 is located between the second sub-pixel p2 and the third sub-pixel p3, and is spaced apart from the second sub-pixel p2 and the third sub-pixel p3. Therefore, the upper bottom surface t13 and the lower bottom surface t14 of the support portion t1 are both disposed in the light exit region cg.

[0063] Optionally, the length of the upper bottom surface t13 is less than or equal to the distance between the second sub-pixel p2 and the third sub-pixel p3, so as to avoid the upper bottom surface t13 overlapping with the second sub-pixel p2 and the third sub-pixel p3, thereby reducing the risk of optical crosstalk.

[0064] In some embodiments, the bottom surface t14 of the support portion t1 may extend to the overlapping area ds and overlap the second sub-pixel p2 and the third sub-pixel p3 to improve light extraction efficiency. For example, the bottom surface t14 of the support portion t1 may cover the entire second electrode 113 .

[0065] In some embodiments, the shape of the support portion t1 may also be a triangle, that is, the length of the upper bottom surface t13 is 0.

[0066] Optionally, the thickness of the support portion t1 is between 800 nanometers and 4 micrometers, for example, 800 nanometers, 1000 nanometers, 2 micrometers, 3 micrometers or 4 micrometers.

[0067] It is understandable that if the support portion t1 is too thick, the thickness of the third sub-pixel p3 will be too large. When the third light-emitting layer 132 is patterned, the pattern area of ​​the third light-emitting layer 132 will be reduced during etching due to the excessive thickness, thereby reducing the light-emitting efficiency.

[0068] Optionally, the first dimming unit t2 and the second dimming unit t3 are in a parallelogram shape.

[0069] Since the thickness of the first dimming part t2 and the second dimming part t3 are equal to the thickness of the supporting part t1, that is, the first dimming part t2, the second dimming part t3 and the side of the supporting part t1 away from the first sub-pixel p1 are flush, the smaller the thickness of the supporting part t1, the smaller the light reflected by the third total reflection interface fs3 and the fourth total reflection interface fs4 in the overlapping area ds.

[0070] Therefore, the thickness of the support portion t1 is selected to be between 800 nanometers and 4 micrometers, which can ensure that enough light in the overlapping area ds is converged to the light emitting area cg and emitted, while avoiding the risk of the light emitting area of ​​the third sub-pixel p3 being too small.

[0071] Optionally, the dimming structure layer tg may further include a base layer t5. The base layer t5 covers the second electrode 113. The support portion t1, the first dimming portion t2 and the second dimming portion t3 are all disposed on the base layer t5.

[0072] The base layer t5 and the support portion t1 are an integrally formed structure, both are formed by the same process and are made of the same material.

[0073] Among them, Figure 2 As shown, the preparation process of the dimming structure layer tg includes:

[0074] Step S1: at the second electrode 113 ( Figure 2 (shown as an example) a layer of material layer c1 with a low refractive index is formed on the surface;

[0075] Step S2, patterning the low refractive index material layer to form a base layer t5 and a support portion t1. The patterning process may be performed by a stamping or photolithography process.

[0076] Step S3 , forming a material layer with a high refractive index on the base layer t5 , and performing a patterning process to form a first light modulating part t2 and a second light modulating part t3 .

[0077] Step S4 , forming a cover layer t4 with a low refractive index on the base layer t5 , wherein the cover layer t4 has flatness and covers the support portion t1 , the first dimming portion t2 , the second dimming portion t3 and the exposed base layer t5 .

[0078] In some embodiments, a reflective layer may be used to replace the third total reflection interface fs3 and the fourth total reflection interface fs4, that is, a reflective layer may be formed on the second side wall t22 and the fourth side wall t32.

[0079] Optionally, the second sub-pixel p2 includes a second light emitting layer 121 disposed on a side of the cover layer t4 away from the first sub-pixel p1. In the orthographic projection direction of the pixel device 100, the third total reflection interface fs3 overlaps with the second light emitting layer 121.

[0080] In this embodiment, the third total reflection interface fs3 overlaps with the second light emitting layer 121, so that most of the light emitted from the overlapping area ds is reflected by the third reflection interface fs3 to the light emitting area cg, reducing the risk of light interfering with the second sub-pixel p2.

[0081] Optionally, the second sub-pixel p2 includes a third electrode 122 and a fourth electrode 123, the second light-emitting layer 121 includes a first portion and a second portion connected to one side of the first portion, and the thickness of the first portion is greater than the thickness of the second portion. The third electrode 122 is disposed on a surface of the second portion away from the first sub-pixel p1, and the fourth electrode 123 is disposed on a surface of the first portion away from the first sub-pixel p1.

[0082] Optionally, the third subpixel p3 includes a second light emitting layer 121, a bonding layer 131 and a third light emitting layer 132 arranged in sequence on the side of the cover layer t4 away from the first subpixel p1. In the orthographic projection direction of the pixel device 100, the fourth total reflection interface fs4 overlaps the third light emitting layer 132.

[0083] In this embodiment, the fourth total reflection interface fs4 overlaps with the third light emitting layer 132, so that most of the light emitted from the overlapping area ds is reflected by the fourth total reflection interface fs4 to the light emitting area cg, reducing the risk of light interfering with the third sub-pixel p3.

[0084] Optionally, the third sub-pixel p3 further includes a fifth electrode 133 and a sixth electrode 134. The third light-emitting layer 132 includes a third portion and a fourth portion connected to one side of the third portion, and the thickness of the third portion is greater than the thickness of the fourth portion. The fifth electrode 133 is disposed on a surface of the fourth portion away from the first sub-pixel p1, and the sixth electrode 134 is disposed on a surface of the third portion away from the first sub-pixel p1.

[0085] Optionally, the bonding layer 131 is made of an insulating material or a metal material. When the bonding layer 131 is made of a metal material, it can shield light and reduce the risk of optical crosstalk.

[0086] Optionally, the second electrode 113 , the fourth electrode 123 and the sixth electrode 134 are connected to form a common electrode.

[0087] Optionally, side walls of the first sub-pixel p1 , the second sub-pixel p2 , and the third sub-pixel p3 are all covered with a protection layer bh.

[0088] In another embodiment, please refer to Figure 4 Compared with the above embodiment, the structures of the second sub-pixel p2 and the third sub-pixel p3 of this embodiment are slightly different.

[0089] Optionally, the second sub-pixel p2 includes a third electrode 122 and a fourth electrode 123, the third electrode 122 is disposed between the cover layer t4 and the second light emitting layer 121. The fourth electrode 123 is disposed on a side of the second light emitting layer 121 away from the first sub-pixel p1. The third electrode 122 includes a conductive reflective layer.

[0090] Among them, since the third electrode 122 has light reflecting properties and the third electrode 122 is arranged on the side of the second light-emitting layer 121 close to the first sub-pixel p1, the third electrode 122 can both drive the second light-emitting layer 121 to emit light and reflect the light emitted by the first sub-pixel p1 in the overlapping area ds, thereby reducing the risk of optical crosstalk. In addition, the third electrode 122 is also used to reflect the light emitted by the second light-emitting layer 121 to improve the light output efficiency of the second sub-pixel p2.

[0091] Optionally, the third sub-pixel p3 further includes a fifth electrode 133 and a sixth electrode 134. The fifth electrode 133 is disposed between the bonding layer 131 and the third light-emitting layer 132. The sixth electrode 134 is disposed on a side of the third light-emitting layer 132 away from the first sub-pixel p1. The fifth electrode 133 includes a conductive reflective layer.

[0092] Among them, since the fifth electrode 133 has light reflecting properties and the fifth electrode 133 is arranged on the side of the third light-emitting layer 132 close to the first sub-pixel p1, the fifth electrode 133 can both drive the third light-emitting layer 132 to emit light and reflect the light emitted by the first sub-pixel p1 in the overlapping area ds, thereby reducing the risk of optical crosstalk. In addition, the fifth electrode 133 is also used to reflect the light emitted by the third light-emitting layer 132 to improve the light output efficiency of the third sub-pixel p3.

[0093] Please refer to Figure 5 The embodiment of the present application further provides a display panel 1000 , which includes a driving substrate 200 and a pixel device 100 as in any one of the above embodiments, and the pixel device 100 is bound and arranged on the driving substrate 200 .

[0094] The display panel 1000 of the embodiment of the present application uses a dimming structure layer tg as a bonding layer, and the dimming structure layer tg is used to guide the light emitted from the overlapping area ds of the first sub-pixel p1 to the light emitting area cg of the first sub-pixel p1 and emit it.

[0095] The structure of the pixel device 100 of the display panel 100 of this embodiment is similar or identical to that of the pixel device 100 of any of the above embodiments.

[0096] Optionally, the driving substrate 200 includes a plurality of driving circuits, one driving circuit is electrically connected to the conducting pad dd, one driving circuit is electrically connected to the third electrode 122 , and one driving circuit is electrically connected to the fifth electrode 133 .

[0097] The above is a detailed introduction to a pixel device and a display panel provided in an embodiment of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A pixel device, characterized in that: include: A first sub-pixel, the first sub-pixel comprising a first electrode, a first light-emitting layer, and a second electrode, the first light-emitting layer being arranged on the first electrode, the second electrode being arranged on a surface of the first light-emitting layer away from the first electrode, the first sub-pixel having a light-emitting region and at least two overlapping regions, the light-emitting region and the overlapping regions being arranged at intervals; A dimming structure layer, the dimming structure layer is arranged on a surface of the second electrode away from the first electrode, and the dimming structure layer is multiplexed as a bonding layer; A second sub-pixel, the second sub-pixel is disposed on a surface of the dimming structure layer away from the first sub-pixel and is located correspondingly in an overlapping area of ​​the first sub-pixel; A third sub-pixel, the third sub-pixel being disposed on a surface of the dimming structure layer away from the first sub-pixel and corresponding to another overlapping area of ​​the first sub-pixel; The colors of light emitted by the first sub-pixel, the second sub-pixel and the third sub-pixel are different from each other, and the dimming structure layer is used to guide the light emitted by the overlapping area of ​​the first sub-pixel to the light emitting area of ​​the first sub-pixel and emit it.

2. The pixel device according to claim 1, characterized in that: The dimming structure layer comprises a supporting portion, a first dimming portion, a second dimming portion and a covering layer, wherein the supporting portion is arranged correspondingly at the light emitting area of ​​the first sub-pixel, the first dimming portion is arranged at one side of the supporting portion and extends to one of the stacking areas of the first sub-pixel, the second dimming portion is arranged at the other side of the supporting portion and extends to another of the stacking areas of the first sub-pixel, the covering layer covers the supporting portion, the first dimming portion and the second dimming portion, the refractive index of the supporting portion is smaller than the refractive indexes of the first dimming portion and the second dimming portion, and the refractive index of the covering layer is smaller than the refractive indexes of the first dimming portion and the second dimming portion; The support portion has a first side surface and a second side surface, the first side surface and the second side surface both extend toward the center line of the support portion, the first side surface has a first slope angle, the second side surface has a second slope angle, and the first slope angle and the second slope angle are both acute angles; The first dimming portion has a first side wall and a second side wall which are opposite to each other, the second dimming portion has a third side wall and a fourth side wall which are opposite to each other, the first side wall and the first side wall are attached to form a first total reflection interface, and the third side wall and the second side wall are attached to form a second total reflection interface; The second side wall has a third slope angle, the fourth side wall has a fourth slope angle, the third slope angle and the fourth slope angle are both acute angles, the covering layer covers the second side wall to form a third total reflection interface, and the covering layer covers the fourth side wall to form a fourth total reflection interface.

3. The pixel device according to claim 2, characterized in that: The refractive indexes of the support portion and the cover layer are both less than 1.7, and the refractive indexes of the first dimming portion and the second dimming portion are both greater than 1.

7.

4. The pixel device according to claim 2, characterized in that: The first slope angle, the second slope angle, the third slope angle and the fourth slope angle are all equal to 45 degrees.

5. The pixel device according to claim 2, characterized in that: In the orthographic projection pattern of the pixel device, the supporting portion is located between the second sub-pixel and the third sub-pixel, and is spaced apart from the second sub-pixel and the third sub-pixel.

6. The pixel device according to claim 2, characterized in that: The second sub-pixel includes a second light-emitting layer disposed on a side of the cover layer away from the first sub-pixel, and in the orthographic projection direction of the pixel device, the third total reflection interface is overlapped with the second light-emitting layer.

7. The pixel device according to any one of claims 2 to 6, characterized in that: The second sub-pixel includes a third electrode and a fourth electrode, the third electrode is arranged between the cover layer and the second light-emitting layer, the fourth electrode is arranged on a side of the second light-emitting layer away from the first sub-pixel, and the third electrode includes a conductive reflective layer.

8. The pixel device according to claim 6, characterized in that: The third sub-pixel includes the second light-emitting layer, the bonding layer and the third light-emitting layer which are sequentially arranged on the side of the cover layer away from the first sub-pixel. In the orthographic projection direction of the pixel device, the fourth total reflection interface overlaps with the third light-emitting layer.

9. The pixel device according to claim 8, characterized in that: The third sub-pixel further includes a fifth electrode and a sixth electrode. The fifth electrode is arranged between the bonding layer and the third light-emitting layer. The sixth electrode is arranged on a side of the third light-emitting layer away from the first sub-pixel. The fifth electrode includes a conductive reflective layer.

10. A display panel, characterized in that: The invention comprises a driving substrate and a pixel device as claimed in any one of claims 1 to 9, wherein the pixel device is arranged on the driving substrate.

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